Piano-action bracket.



PATENTED MAR. 6, 1906.

J. DAVENPORT.

PIANO ACTION BRACKET. APPLICATION FILED JAN. 6. 1905.

UNITED STATES ig rnn'r 01inch.

Specification of Letters Patent.

Patented March 6, 1906.

Application filed January 6. 1995. Serial No. 239,847.

To (ML whom it may concern:

Be it known that 1, JOHN DAVENPORT, a citizen of the United States, and a resident of Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Piano-Action Brackets, of which the foilowing is a specification.

My invention refers to an im roved form of piano-action bracket, made 0 sheet metal and adapted to be contained within an u right piano to support the operating mec anism for the hammers.

It is the objects of myinvention to produce a sheet-metal piano-action bracket from two main parts or plates of sheet metal, having means for its attachment to the connecting parts of a piano, and further provided with means for the attachment to it of the hammer-operating mechanism to construct the foregoing in a simple and efficient manner and to insure an inexpensive production.

Similar characters of reference denote like or corresponding parts throughout the several figures of the accompanying sheet of drawings, forming a part of this specification.

Upon the drawings, Figure 1 shows a perspective view of the preferred form of my improved piano-action bracket complete. Fig. 2 is a rear edge elevation of the construction shown in Fig. 1. Fig. 3 is a detail transverse cross-section taken on line 3 3 of Fig. 1, illustrating the manner in which the parts are laid together. Figv 4 is a similar crosssection of a modified form of construction which may be employed in lieu of that shown in Fi s. 1, 2, and 3, as wiil again be referred to. Fig. 5 is a modified construction of bracket, the same being formed of two pressed plates riveted together and minus the fillingpieces shown in the preceding views.

As stated, my bracket is made of sheet metal and preferably of two main side plates A and B, which are arranged and riveted toether to form an integral bracket. These individual side plates are made of com aratively thin stock and can be stampe out with dies in a press to reduce a bracket of any required design. ese sides are alike in construction, except that one is a right and the other a left, as is obviously ap arent. Each of these side plates, as shown in Figs. 1., 2, and 3, contain outwardly-deflected extensions or cars C, D, and E, the former upon an arm C to produce a hammer-rail rest F and the latter to form attaching-flanges for the rails which support the hammer mechanism. (Not shown.) Intermediate of the side lates A and B at these particular locations or attachment I provide filling-pieces F, which are of uniform thickness and serve to retain the sides at a uniform distance a art, being riveted together, as indicated. dditional filling-pieces G, H, and I are placed intermediate of these sides, one being located at the lower end, another at the to and the third intermediate at the point Rivets are employed through the sides and the filling-pieces at each of the places mentioned to roperly secure the arts together. The ower end piece I of t e bracket contains a socket which in practice receives the end of the supporting-bolt. (Not shown.) A second bolt-socket K is also formed intermedietc of the upper ends of the sides adjacent to the piece G to accommodate the upper bolt, (not shown,) which in practice is secured'to the wrest-plank or pin-block of the piano. The block shown at J contains ascrew-hole to permit of the attachment thereto of the upper rail of the hammer mechanism.

If preferred, two short T-pieces L, as shown in Fig. 4, can be used in lieu of each of the pieces F, in which instance the flanges of the T could be employed for attachment to the rail instead of the flanges D and E (shown in Figs. 1 and 2) and which are integral with the side'plates.

I find it more practical and desirable to make some forms of these brackets of two pieces, as shown in Fig. 5, wherein the same number of iocations for bolt-and-rail connections are shown, each of which are formed of the side plates and without the use of the pieces, as in the other instances. Rail connections M, N, and O are provided by form ing screw holes through the bod of the bracket produced by stamping ha f-round transverse grooves across the inside of the body of the two side plates, as indicated. I also stamp and deflect the top and bottom ortions P and Q of each side outward to orrn a bolt-socket K intermediate thereof. I also deflect the free ends, as at R, to form the hammer-rail rest.

Having thus described my invention, what screw-holes for the attachment of said bracket to action-rails.

'3. A piano-action bracket formed of two like plates of sheet metal, each containing an. arm with deflected ears, to form a hammerrail rest, additional extensions bent to form attaching-flanges, and bolt-sockets in the ends of the brackets.

4. A piano-action bracket comprising two sheet-metal side members bearing an arm to form a hammer-rail rest, metal pieces secured intermediate of said side members to broaden and strengthen the bracket, and screw-holes and sockets for the attachment of the bracket to action-rails.

5. A piano-action bracket comprising two sheet-metal members secured to ether each containing an arm with ears de ected at a ri ht angle to form a hammer-rail rest, and a ditional similarly-deflected flanges with screw-holes therein for the attachment of the bracket.

6. A piano-action bracket formed of sheet metal and comprising two side plates each having an arm contaming ears deflected to form a hammer-rail rest, filling-pieces inter mediate of said plates, and bolt sockets formed in the end of said bracket.

7. A piano-action bracket comprising two sheet-metal members secured together containing integral flanges deflected therefrom for the attachment of the bracket, and pieces secured intermediate of said flanged portions of the bracket, and boltesockcts in the ends of said bracket.

8. A piano-action bracket formed of two like pieces of sheet metal secured together, each containing integral arms bearing cars bent to form a hammer-rail rest and additional ears to form flanges for attachment to actionrails, pieces intermediate of said plates, and bolt-sockets formed in the ends of the bracket.

9. A piano-action bracket formed of two like plates of sheet metal including an arm, integral ears on the plates of the bracket bent to form a hammer-rail rest and attachingflanges, pieces intermediate of said arms and ears of the plates and bolt-sockets in the ends of the bracket.

10. A piano-action bracket comprising two sheet-metal side members, pieces intermediate of said sides, bolt-sockets in the upper and lower ends of said brackets and additional screw-h0les through portions of the bracket for attachment to action-rails.

Signed at Stamford, in the county of Fairfleld and State of Connecticut, this 24th day of December, A. D. 1904.

JOHN DAVENPORT.

Witnesses C. M. ,NEWMAN, WV. V. DEVITT. 

